September weather forecastPhilipsburg, Sint Maarten

The coastal city of Philipsburg, in Sint Maarten, with a distant view of the mountains, and the Great Salt Pond

September

Weather in September

September signals the transition towards the later part of the year in Philipsburg. Despite the temperature dip to 31°C (87.8°F), it holds a reputation for the highest rainfall of the year, amassing an average of 129mm (5.08"). The city’s climate steers towards a slightly cooler and wetter pattern, still complimented by stable sunshine hours. As the rainy days grow, the fading summer warmth is slowly replaced by the charm of the coming autumn.

Temperature

In Philipsburg, the warmest months are June through October, registering an average high-temperature of 31°C (87.8°F).

Rainfall

The month with the most rainfall is September, when the rain falls for 19 days and typically aggregates up to 129mm (5.08") of precipitation.

Sea temperature

September and October, with an average sea temperature of 29°C (84.2°F), are months with the warmest seawater.
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) in water are ideal for swimming, diving, and other activities, providing enjoyment and comfort for extended durations.

Daylight

The average length of the day in September is 12h and 14min.
On the first day of the month, sunrise is at 05:57 and sunset at 18:25. On the last day of September, sunrise is at 06:02 and sunset at 18:01 AST.

Sunshine

The months with the least sunshine are January, February, May through July, September through December, with an average of 8h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index in Philipsburg. A UV Index estimate of 11, and higher, represents an extreme health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum daily UV index of 12 during September morphs into the following directions:
Employ all critical precautions. Guarding against sun damage is essential. From 10 a.m. to 4 p.m., when UV radiation is at its strongest, limit direct exposure to the Sun and note that shade structures may not provide full sun protection. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Even if the day is cloudy, sunscreen with SPF of at least 30 should be applied generously and reapplied often, particularly after swimming or outdoor exercise. Caution! Sand and water surfaces escalate the UV intensity from the Sun.

Updated: Aug 23, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Philipsburg's warmest months, June through October, record an average high-temperature of 31°C (87.8°F).

During September, Philipsburg experiences an average high-temperature of 31°C (87.8°F) and a low-temperature of 25°C (77°F).

September is the month with the most rainfall. Rain falls for 19 days and accumulates 129mm (5.08") of precipitation.

In Philipsburg, in September, during 19 rainfall days, 129mm (5.08") of precipitation is typically accumulated.

The months with the warmest seawater are September and October, with an average sea temperature of 29°C (84.2°F).

In September, the average sea temperature in Philipsburg is 29°C (84.2°F). For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

In September, the average day length is 12h and 14min.

In September, on the first day of the month, sunrise is at 05:57 and sunset at 18:25. On the last day of the month, sunrise is at 06:02 and sunset at 18:01 AST.

The months with the least sunshine are January, February, May through July, September through December, with an average of 8h of sunshine.

In Philipsburg, the average sunshine duration in September is 8h.

March through September, with an average maximum UV index of 12, are months with the highest UV index.

In Philipsburg, the average daily maximum UV index in September is 12. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV radiation.

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Long-term

Year J F M A M J J A September O N D

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September

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Average high temperature

31°C

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

Average temperature in September
Philipsburg, Sint Maarten

Average high temperature in September: 31°C

The warmest months (with the highest average high temperature) are June, July, August, September and October (31°C).
The months with the lowest average high temperature are January, February, March and December (29°C).

Average low temperature in September: 25°C

The months with the highest average low temperature are June, July, August, September and October (25°C).
The coldest months (with the lowest average low temperature) are January, February, March and December (23°C).

Average rainfall in September
Philipsburg, Sint Maarten

Average rainfall in September: 129mm

The wettest month (with the highest rainfall) is September (129mm).
The driest months (with the least rainfall) are February and March (43mm).

Average rainfall days in September
Philipsburg, Sint Maarten

Average rainfall days in September: 19 days

The month with the highest number of rainy days is November (21 days).
The month with the least rainy days is April (12 days).

Average sea temperature in September
Philipsburg, Sint Maarten

Average sea temperature in September: 29°C

The best months for swimming (with the highest average sea temperature) are September and October (29°C).
The coldest months (with the lowest average sea temperature) are January, February, March and April (26°C).

Average daylight in September /
Average sunshine in September
Philipsburg, Sint Maarten

Average daylight in September: 12h and 12min

The month with the longest days is June (Average daylight: 13h and 12min).
The month with the shortest days is December (Average daylight: 11h and 6min).

Average sunshine in September: 8h

The months with the most sunshine are March, April and August (Average sunshine: 9h).
The months with the least sunshine are January, February, May, June, July, September, October, November and December (Average sunshine: 8h).

Average UV index in September
Philipsburg, Sint Maarten

Average UV index in September: 12

The months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
The month with the lowest UV index is December (UV index 7).